Pneumatic carpet-sweeper.



'A B. CLSK'INNER. PNEUMATIC CARPET SWEEPER. APPucATIoN mso MAR. a. 190s.

[2l-TI T"\` 5 I" l|| /7 ilu-HI8, I 9 7 V, l lI I* Il lll.. "f

. Tl-:- g

' 1N VEIVTOR.

A ATTORNEY.

BENJAMIN c. smNNERfoE BERKELEY, cALironNii'n iissicivon, ier MESNE nssiqnl.-

)EUEAGTUEIYNG coMraNY, njconrcnarron MENTS, TO ELECTRIC RENOVATOR. F PENNSYLVANIA.

Application flied March is,A

To aZZwwm t may/concern:

Be ,it known that I, BENJAMIN C. Sinn-j- NER, a citizen of the United States, residing' y at Berkeley, in the county of Alameda and Carpet 'Sweepers, of which the following is State of California, have invented certain new and useful Improvements in Pneumatic` a specification. l

lhis invention relates to improvements in pneumatic vrenovators, and especially to iinprovements in that type of apparatusjdisf closed in an application lfiled by Alonzo Chapman on October 31st, 1905, Serial Num# ber 285,239. f j' l y As set forth in the above mentioned appli' cation, vthe leading feature of this type of apparatus is the provision of a light, self-con-y tained, manually propelled -machine which may be readily moved from place to place,

and over A the surface. tov be cleaned. This lightness and' compactness, `however,'. in l'no way effects the efficiency of the machine, as,

. by a peculiar arrangement of the motor to provide means for protecting the bear-j ings of the rotary parts fromthe entrance'.

l of the device.

'driven fan, *a very-powerful suction is produced.

The primary object of the present invention of'lint and similar material in larger particles than the ordinary dust, and which, un 44 less special provision is made, tend to clogup said bearings and impair the operation A- further object of the invention is to;l

provide improved means whereby the ma-,-z

j chine may be readily and quickly adapted for cleaning either oors, or walls, furnifvf' ture, etc.

A further object is to provide an improved arrangement of supportingjwheels for the l' machine, whereby the same may be 'more' conveniently manipulated.

- ing drawings, in which AWith the above and other vmy objects in View, l vention consists in the construction and arrangement of parts hereinafter described and illustrated in theJ accompanyy 1 Figure 1 is a broken plan view of the renovatorequipped with my improvement; Fig.

2is a broken side elevation of the same;

is a broken `detail'vertical sectional '.view onfis a similar view on the-line 4-4 of Fig. 1.

the line`3-3 of Fig12'; andv Fig.

PNEUMATI c'AErEnswEEPEn.

isos. 4serial No. 305,362..

represents a handle,` by which the carpet Specification of Lttersiliatentf I end of al-platform 2, which"carries`211116160* f 'Y tro-motor l3, supplied with" electricity i'by' .means of the .binding vposts t, to whichy va flexible conductor y cord l(not shown) -is attached. On the other end ofthe .shaft 5- which extends outside the motor, are mount.

ed 'a pair of fans 6,-',7, vwhichrotate 'in sepa.-- rate casings v8, 9. On the extreme endf the shaft- 5 is'fa pulley v1,0 around. which travels upon v'the s aft o fa 'brush 13, said brush revolving in a casing 14 secured to the frame ofthe apparatus. This casing is provided at its. bottom with a suction mouth' the edges of which, as clearly shown in- Figgg,

make direct,v :hat contact with the". floor or for one end of the platform.

The brush 13, is not essential to the op..

l'surface to 4be cleaned, and serve .as a support eration of the apparatus, as the cleaning ac- I.

tion is due primarily to suction, but, when employed, serves as a vbeater or stirrer tol loosen up the dust and facilitateits removal. 'l

' The ,dust laden air fromthe brush casingv iv -lea'dsfby a'conduit 15 to the center ofthe.

casing'8 and is forced out byfc'entrifugal force to the' periphery thereof, vv vhen'ce 1t this second fan itis discharged into the con- 8:5v vpasses by a conduit 16 to the center of the b casing 9. ofy the second fan. By means'of.

duit `-17 leading to 'anysuitable dust-collec-v tor or receptacle (not shown).

All ofthe above parts maybe of the usual orany preferred construction.

, he presentI invention provides means the entrance of particles of lint or the like into vthe bearings of the shaft 5. For this purpose the dust laden air from the brush 1s"caused to pass through a separating chamber 18 -across which is extendeda wire orV other foraminous screen 19 by which the larger articles of lint are arrested. It will` 4vwhich I will now describe vfor preventingg chamber 14 before entering the conduit 15v I by the screen will drop into said Abex. Said chamber has an opening at one end closed by a flanged door 22 having ltherein a glass window 23, and made air tight by a rubber packing 24. `Through said window the amount of material collected in the box may be observed, and from time to time the chamber may be opened and the box removed and emptied. There is also provided a scraper 25 operated by a rod 26 passing through a small aperture in the door 22 of the chamber, which may be moved over the screen at suitable intervals to scrape the lint or other material therefrom. By the use of the separating chamber and screen, all particles of such size as not to be readily carried out by the current of air, are excluded from passing through the blowers, thereby preventing said particles entering the bearings and causing unduefriction.

As clearly shown in'Fig. 2, a branch 15a extends from the conduit l5., and valvev means 15? and 15 are locatedin the branch and main conduits respectively. These valve devices are adapted to be operated by means of a handle 15d.

A flexible hose (not shown) carrying at its end any suitable nozzle, may be attached to the branch conduit, and employed to remove the dust from walls, furniture, etc.

' wheels 2 are of relatively large diameter,

in order to elevate the platform above the floor to facilitate the handling of the machine, and the weight of the motor and brush casing cause the platform to normally assume the inclined position'shown in Fig. 2. In order, therefore, for the suction mouth to make flat contact with the surface on which the wheels rest, its edges project below the bottom of the platform, and lie in a plane making a sharp angle therewith.

By bearing down on the handle l, the platform 2 may be tilted above the axis of the wheels or rollers 2', and thus the suction mouth lifted clear of the floor. ln this position, the machine may be freely moved from place to place. Y l

What I claim is 1. 'A manually movablepneumatic renovator comprising a platform, suction. producing means carried by said platform, a suction mouth also carried by said platform,

` a conduit connecting said suction mouth and .suction producmg means, 'a branch condult extending from said main conduit, and means for controlling the passage of air through saidV conduits.

A2. A manually movable pneumatic renovator comprisiga platform supported on rollers, a suction mouth and separating chamber carried thereby, suction producing means also carried thereby, a conduit connecting said chamber and said suction producing means, a branch conduit extending from said main conduit, andV valve means controlling the passage of air through said conduits.

3. Ainanually movable ,pneumatic renovator comprising a platform having supporting wheels adjacent one end only, said wheels being located between the opposite vator, comprising a platform supported be-' tween its ends only upon rollers about the vaxis of which the platform may 'be moved as a pivot, a casing at one end of the platform having a suction mouth, the surrounding edges of which lie in a plane below the lower surface of the platform whereby said mouth may be brought into direct contact with the surface being cleaned, a fan having rommunication with said casing and provided with an outlet for the dust laden air,

and a motor for operating the fan, said motor and fan being mounted upon the platform between the rollers and moutlrso that their weight normally serves to malntain the suction mouth in contact with the surface being cleaned.

A portable manually propelled renovator comprising an air conduit provided with a suction mouth in fixed'relation therewith anda projecting spout adapted to receive a fiexible hose 'for a cleaning tool, a valve controlling the passage of air through said conduit, a second valve controlling the passage of air' through said spout,a motor, a fan casing having an intake. openlng with which said conduit is in communication, a discharge conduit leading from the periphery of said casing, and a fan within said casing connected with said motor.

G. A -portable manually propelled pneumatic renovator, comprising an air conduit, a suction mouth in fixed relation therewith and adapted to be moved over the surface to be cleaned, and a projecting spout 4adapted to receive a iexible hose, valve means for In witness whereof I have hereunto set casing and a :fan within said casmg concontrolling the passage of air through' said my hand in the presence of two subscribing 4conduit land spout, a motor, a, fal casin witnesses.

having an intake openin connecte to an l 5 movable with said condu?, a discharge con- -A v vB' C SKINNER' duit .leading .from the periphery of .said Witnesses:

' BEssm GORFINKEL,

nected with the motor. g 1- A BLANCHE WooLF. 

